richards



2 Sheets-Sheet 1.

(No Model.)

P. H. RIOHARDS.

MEGHANISM FOR GREASING BNVELOPB BLANKS.

No. 343,854. PatentedJune '15, .1886.

w WM I W MA. W

2 Sheets-Sheett 2.

(No Model.)

1-. H. RIOHARDS. MEGHANISM FOR GREASING ENVELOPE BLANKS.

` Patented June 15, 1886.

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FRANOIS H. RICHARDS,' OF SPRINGFIELD, MASS., ASSIGNOR OF ONE-HALF TO THE PRATT & VHTNEY COMPANY, OF HARTFORD, CONN.

MECHANISM FOR CREASNG ENVELOPE-BLNKS.

SPECIFICATION forming part of Letters Patent No. 343,854, dated June 15, 1886.

.Application filed September 14, 1885. Serial No. 17'1,084. (No model.)

To all whom it may concern:

Be it known that I, FRANoIs H. RrcHARDs, a citizen of the United States, residing at Springfield,in the countyof Hampden, State of Massachusetts, have invented certain new and useful Improvements in Meehanism for Creasing Envelope-Blanks, of which the following is a specification.

This invention relates to improvcments in mechanism for creasing envelope and other blanks of paper or similar material, the object being to furnish such a mechanism adapted to be used in and constitute a part of that class of envelope-machines in which the blanks are creased in their folding lines prior to the folding operation.

To this end the invention consists in the combinations hereinafter deseribed and claimed.

In the drawings accompanying and forming a part of this specification, Figure 1 is a vertical longitudinal section of a mechanism embodying my improvements. Fig. 2 is a top View of the same. Fig. 3 is a Vertical section in line a a, Figs. 1 and 2. Fig. 4: is an enlarged view of a part of Fig. 3, showing the parts as situated at the beginning of the creasing operation. Fig. 5 is a view similar to Fi g.

4, showing the parts when said operation is partly performed. Fig. 6 is similar to Figs. 4 and 5, showing the parts at the close of said operation. Fig. 7 shows a modified construction of the mechanism. Fig. 8 is a Vertical section in line c c, Fig. 7, same part.

Similar characters designate like parts in all the figures.

The frame-work supporting the mechanism consists of a top plate, A, sustained by ends B B, which have formed in them bearings for a driving-shaft, S, that is provided with cams for Operating the upper and lower creasing' dies. Said upper die is designated by D, and is carried by an arm, 3, of slide 4, which is adapted to have a Vertical reciprocating movement in bearing 5, being raised by cam 6 and drawn down by spring 7. The construction of the cam may be modified, if desired, so as to move the slide in both directions, as it is obviously immaterial to my invention what means are selected to operate the die. The

lower die is a composite one, each side being made separate from the others. In this the die proper consists of four bars, 8, usually made of leather and supported in four sides, 9 9 10 10, which slides are supported so as to simultaneously have, after the upper die has been brought down onto said bars 8, a closing movement (lerived from suitable operative mechanism. This peculiar action is indeed the chief characteristic of my present invention'.

In the first six figures of dra-wings I have shown one way of supporting the slides so they may be operated as described. Side slides,

9 9, are each held in place by a cap,11, fiXed to the frame and are operated by a lever, 12, from cam 13, said levers being pivoted to the frame at 14 and to their respective slides at 15. The end slides, 10 10, are similarly held iu place by caps 16, and are operated by similar pivoted levers, 17 ,from cams 18. It will be understood these several cams are supposed to be constructed so as to impart the proper motions,

as hereinafter described, to the upper die and to the slides of the lower die. lt should be noted also that bars 8 have a lower part, 20, and a higher part or ledge, 22, forming be tween them an angle, 24:, Figs. 4 and 5. This shape may, however, be varied eonsidera-bly without serousl y affecting the efficiency of the mechanism.

The operation of my invention will be understood by referring to Figs. tto G. A sheet of paper, R, is first placed on the lower die, as in Fig. 4-, resting on bars 8. The upper die is then brought down to the paper and presses it down against surface 20, as in Fig. 5, at a little distance from ledge 22. On now continuing the motion of the cams, the slides 9 9 10 10 are moved toward each other, as clearly indicated by Fig. 6, closing the ledge 22 up against the side of the upper die and pressing the paper into angle 21. This operation being siinultaneously performed on the four sides, the blank (shown plain in Fig. 9).is folded up, as shown in Fig. 10,without tearing or breaking the paper.

The aforesaid slides 9 9 10 10 are not necessarily operated by means of levers. In Figs. 7 and 8 is illustrated a way of doing so by means of wedgepointed slides, these being supposed to be operated by suitable cams or the like Ioc devices. According to this plan the frame A has openings through which slides 25 are adapted to have a Vertical reoiprocatin g movement. A horizontal bar, 26, is attaohed to their lower ends as a means for effecting said movement, this bar being supposed to be opz 5 -erated by a cam or the like. On the inner side at the upper V end these siides 25 are inolined and provided with inolined wings 27, fi'tting inolined grooves 28, formed in slides 10. Thus by moving up slides 25 slides 10 are moved [o toward each other, and vice versa. i

Having thus described my invention, I claim- 1. The combination, in a blank-oreasing mechanism, of an upper` die, a lower die con- 15 sisting of a series of separate' sides, substantiaily as desorbed, and means, substantiall y as described, Operating to first bring down the upper onto the lower die, and then close the lower one onto the upper one, substantially as set forth. 20

2. The combination of die D, s1ides99 1010, each having a bar, 8, rabbeted, substantially as described, caps 11 16, ievers 1217, cams 13 18, and means, snbstantially as described, for opw erating the die D, substantially as set forth.

FRANCIS H, RIOHARDS. 

